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(11) | EP 0 419 259 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Accurate recognition of input patterns |
| (57) On recognizing first through P-th input patterns as first through P-th recognized
patterns (P being greater than one) by using a plurality of reference patterns and
a plurality of memorized identifiers identifying the reference patterns, a processing
circuit (35) processes the first through the P-th input patterns into first through
Q-th provisional patterns different from one another, where Q is not greater than
the above-mentioned plurality. A calculating circuit (50) calculates dissimilarity
degrees had by the reference patterns relative to the first through the Q-th provisional
patterns to select, with repetition allowed as selected patterns, the reference patterns
which have the dissimilarity degrees less than a predetermined degree. The calculating
circuit thereby selects R particular identifiers and S different identifiers from
the memorized identifiers, where R plus S is not greater than P and is not less than
the plurality. Each particular identifier and each different identifier identify only
one pattern and one of at least two patterns of the selected patterns. The other at
least one of the above-mentioned at least two patterns is identified by at least one
of the R particular identifiers. A determining circuit (60) determines first through
P-th output identifiers identifying the first through the P-th recognized patterns
by using the R particular idenifiers as ones, R in number, and others, S in number,
of the first through the P-th output identifiers. |